Improvement in power-hammers



M. DEF-RING.

Power-Hammer.

No. 208,719. Patented Oct. 8,1878.

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UNITED STATES MICHAEL DEERING, OF SYRACUSE, N.

HIS RIGHT TO CHRISTOPHER IMPROVEMENT IN Y., ASSIGNOR OF THREE-FOURTHS OFC. BRADLEY, OF SAME PLACE.

POWER-HAMMERS.

Specification forming part of Letters Patent No. 208,719, dated OctoberP, 1878; application lllml July 26, 1877.

To all whom it may concern:

Be it known that I, MICHAEL DEERING, of Syracuse, county of Onondaga, inthe State of New York, have invented certain new and useful Improvementsin Power-Hammers; and I do hereby declare the following to be afull,clear, and exact description of the same, sufiicient to enable thoseskilled in the art to which my invention appertains to make and use it,reference being had to the accompanyin g drawings,formingpart of thisspecification, in which- Figure 1 is a vertical side elevation, and Fig.2 a horizontal plan view, of the same; and Fig. 3, a detail view.

My improvements consist in the construction and arrangement of thedevices by which the helve of the hammer is operated; in theconstruction and arrangement of the parts which support the helve andabout which it vibrates; and in providing an improved means for verticaladjustment of the helve.

In the drawings similar letters represent like parts wherever used.

Referring to the drawings, Ais the main frame, upon which, at its rearextremity, is placed and secured by bolts or nuts or other suitabledevices the housings or helve-standards B B, which are provided at theirupper extremities with apertures or bearings to receive spindle-bearingsC C.

D is a cross-head or helve-sleeve of such box form as to receive thehelve E, which is secured within it by means of the bolts to a.

F F are plates, laterally secured to the side of the cross-head by meansof headed bolts 1) b, the apertures through which said bolts pass beingvertically extended, so as to allow of an upward or downward motion ofthe plate on the side of the cross-head. The side plates F F areprovided with lugged projections 0 c, which have apertures for thereception of the trunnion-bolts b I), which support the box and helve,and about and upon which trunnions they oscillate.

dc are set-screws, passing vertically through lugs on the side of thecross-head and abutting against the upper and lower surfaces of the sideplate F F, and securing the same against vertical displacement, thedepth of the side plates being less than the vertical distance betweensaid lugs, so as to allow of a vertical adjustment of the side platesand cross-head relatively to each other.

G is the driving shaft, passing through bearings on the main frame, andcarrying upon either end a fly-wheel, H, and pulley l, and beingprovided centrally with a circular eccentric-cam, J, mounted on thesame, which eccentric is encircled by the divided strap K, to the uppersurface of which is fixedly attached the eccentric-rod L.

/M is the eccentric cross-head bar, carried upon and secured to theupper extremity of the eccentric-rod by means of screw-nuts g g,abutting against its upper and lower surface, and capable of verticallyadjusting the same. Through the extremitiesof this cross-piece passbufier-connecting rods h h, upon each of which are placed two rubberbuifers, N O, which are properly secured to the same by means ofscrew-nuts or washers, and each buffer is provided at its upper andlower extremity with metallic washers or jackets 'i '1', to protect thesame.

P is a journal-shaft, provided with eyes at its extremities, throughwhich eyes pass the buffer-rods hit. This journal-shaft is located onsaid rods between the buffers N O. Q is ajournal-bearing plate, securedto the under side of the helve by means of bolts or nuts, or othersuitable devices, which provides a bearing for the journal-shaft P. Thisplate (g is provided with slots 8 s, through which pass the bolts whichsecure the plate to the under surface of the helve. These slots areextended in the direction of the length of the helve. Thus it is readilyunderstood that the journalbearing plate Q, to which is connected theoperating mechanism, can be adjusted backward or forward in thedirection of the length of the helve, and the length of the. stroke ofthe hammer be thereby regulated R is a bracket or standard springingfrom the main frame A, and carrying, by means of a screwshaft, j therubber buifer S, which abuts against the lower surface of the helve, andis vertically adjustable relatively to the same by means of saidscrew-shaft. This stationary butler S serves to arrest and control theupstroke ot the hammer.

From the construction described it will be seen that I have dispensedwith the ordinary yoke through which motion has been heretoforetransmitted to the helve, and have directly connected the drivingeccentric-cam with the helve, retaining, however, the elas tie andcontrolling principle derived from the employment of rubber bufi'ers toarrest the upand-down stroke of the hammer by interposing such buffersbetween the eccentric-cam and the helve, as an element of the directoperating connection between said helve and cam; and by my improved modeof construction I am able to obtain a greater etiieicney in theoperation of the hammer by avoidance of loss of motion and power byreason of the direct application of the same.

Further, by the employment of a round eccentric-cam in connection withits fixedly-attached eccentric-rod, eccentric (rosshead bar, bufier,connecting-rods, and journal-shaft, the. whole vibrating about a pointin close proximity to the helve, the driving devices and the helve moreperfectly oscillate together.

By means of the set-screws d (I and e c and side plates F I 1 am enabledmore efiiciently to raise or lower the helvc in respect to its housingsor standards, and thus readily and accurately adjust the distance of thehammer from the anvil, as the character of the work to be done mayrequire, the springs N, t), and S being likewise capable of verticaladjustment to conform to the requirements of the change of position ofthe helve.

It may here be remarked that the driving-shaft, with its cam,eccentric-rod, buffers,

and other driving parts, may as readily be located and applied to thedriving of the helve at a point in the rear of the helve standards orhousings B I; as in front of the same, without changing the character ofmy invention.

This form of construction may be desirable where the greatest amount offorce of blow is desired to be obtained from the power employed in theoperation of the hammer. Delieacy of the blow is, however, increased bythe arrangement of parts as hereinbei'ore described, and in the drawingshown.

Having thus described my invention, what I claim, and desire to secureby Letters Patent of the United States, is- 1. In a powerhammer, thehelve E, in combination with an elastic operating mechanism, whichoperating mechanism is directly connected and pivoted to the helve bymeans of the plate Q, which is attached to the helve, and islongitudinally adjustable relative thereto, substantially as shown anddescribed, and for the purpose specified.

2. The cross head 1), provided with setscrews (1 0, in combination withthe adjustable side plates I I having bearings for the reception oftrunnions, the whole forming a device for the support and adjustment ofthe helve, substantially as shown and described.

:5. Thejournal-bearin g plate Q, provided with elongated slots 8 s, forthe reciprocation of bolts to secure said plate to the helve, and toallow the adjustment of the same on the helve, to regulate the length ofstroke of the hammer, substantially as shown and described.

MICHAEL DEI'IRING.

Witnesses:

Jxo. S. LYNCH, ltienARn S. (7mm), Jr.

